the timing couldn't be more urgent for the president with new polls showing mitt romney closing the gap in some key battleground states. surveys from quinnpiac university, cbs news and the "new york times" show a dead heat in colorado and mitt romney cutting the president's lead in wisconsin in half. fox' dug luzader looks ahead to tonight. >>reporter: both vice presidential candidates are heading into tonight's debate with some new poll numbers. this is our brand new fox news poll. it shows that joe biden and paul ryan are pretty evenly matched within the margin of error as far as their favorability numbers are concerned, but look at the unfavorables. that's where joe biden tonight has some ground to make up. paul ryan arrives in kentucky for his big night, swarmed by supporters. vice president joe biden is scheduled to arrive later today. this one on one between them is getting a lot of buildup because the stakes are so high after last week's obama/romney debate that may have turned this race on its head. president obama still stinging after what was seen as a weak performance told ab